May weather in National City, CA
The average temperature in National City in May is 63.4°F (58.0°F–68.9°F). Average precipitation: 0.27 inches.
May is a spring month in National City, and is warmer than the annual average of 63.3°F. Daily temperatures swing about 10.9°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 13h 41m. For travel, May is one of the best months of the year to visit.
Avg High
68.9°F
Avg Low
58.0°F
Precipitation
0.27 in
Daylight
13h 41m
May records in National City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 96.1°F (2014) | 43.0°F (1967) | 0.73 in (1955) |
| May 2 | 95.0°F (2004) | 44.1°F (1953) | 0.43 in (1955) |
| May 3 | 93.9°F (2004) | 44.1°F (1938) | 0.18 in (1930) |
| May 4 | 90.0°F (1944) | 46.0°F (1949) | 1.62 in (1930) |
| May 5 | 89.1°F (1953) | 43.0°F (1950) | 1.65 in (1921) |
| May 6 | 93.9°F (1953) | 44.1°F (1975) | 0.48 in (2016) |
| May 7 | 86.0°F (2007) | 45.0°F (1929) | 0.80 in (2017) |
| May 8 | 87.1°F (2007) | 44.1°F (1950) | 0.55 in (1928) |
| May 9 | 87.1°F (2007) | 44.1°F (1950) | 1.21 in (1977) |
| May 10 | 88.0°F (2025) | 41.0°F (1922) | 0.69 in (1933) |
| May 11 | 82.0°F (1996) | 45.0°F (1953) | 0.09 in (1989) |
| May 12 | 88.0°F (2014) | 43.0°F (1975) | 0.50 in (1958) |
| May 13 | 93.0°F (2014) | 48.0°F (1953) | 0.09 in (1995) |
| May 14 | 93.9°F (2014) | 39.0°F (1994) | 0.02 in (1947) |
| May 15 | 98.1°F (2014) | 46.0°F (1968) | 0.65 in (2015) |
| May 16 | 90.0°F (2014) | 39.9°F (2002) | 0.11 in (1930) |
| May 17 | 84.0°F (1967) | 46.0°F (1962) | 0.05 in (1962) |
| May 18 | 90.0°F (1956) | 45.0°F (1933) | 0.19 in (2011) |
| May 19 | 80.1°F (1978) | 46.9°F (1944) | 0.20 in (2019) |
| May 20 | 82.9°F (2017) | 46.0°F (1950) | 0.43 in (1920) |
| May 21 | 75.9°F (1941) | 46.0°F (1945) | 0.53 in (1921) |
| May 22 | 80.1°F (1990) | 45.0°F (1933) | 0.23 in (1921) |
| May 23 | 84.9°F (1992) | 48.0°F (1939) | 1.45 in (2008) |
| May 24 | 84.0°F (1992) | 46.0°F (1945) | 0.18 in (1931) |
| May 25 | 84.0°F (1992) | 46.9°F (1965) | 0.31 in (1931) |
| May 26 | 82.9°F (1992) | 46.9°F (1953) | 0.29 in (1962) |
| May 27 | 80.1°F (1997) | 46.0°F (1929) | 0.08 in (1947) |
| May 28 | 89.1°F (1997) | 48.9°F (1946) | 0.18 in (1990) |
| May 29 | 82.9°F (1984) | 48.9°F (1921) | 0.10 in (1971) |
| May 30 | 79.0°F (1978) | 46.9°F (1921) | 0.04 in (2016) |
| May 31 | 80.1°F (2025) | 48.0°F (1953) | 0.02 in (1955) |